Complete Table 2 to show three differences between DNA in the nucleus of a plant cell and DNA in a prokaryotic cell. Table 2 | DNA in the nucleus of a plant cell | DNA in a prokaryotic cell | |-----------------------------------|----------------------------| | 1 | | | 2 | | | 3 | | Scientists investigated the genetic diversity between several species of sweet potato. They studied non-coding multiple repeats of base sequences. Define 'non-coding base sequences' and describe where the non-coding multiple repeats are positioned in the genome. [2 marks] The percentage similarities in the non-coding multiple repeats of base sequences of four species of sweet potato are shown in Table 3. Table 3 | Species of sweet potato | Percentage similarity between non-coding multiple repeat base sequences | |------------------------|----------------------------------------------------------| | C | 53.5 | 53.5 | 25.7 | 59.7 | | L | 53.5 | 33.4 | 53.7 | | R | 25.7 | 33.4 | 36.6 | | T | 59.7 | 53.7 | 36.6 | Use the information in Table 3 to complete the phylogenetic tree shown in Figure 8. Write the letter that represents the correct species into each box. Figure 8 Key - Common ancestor of the species to the right - Historical time, years before present

A-Level AQA Biology 4.1 DNA, Genes & Chromosomes: Complete Table 2 to show three d

Complete Table 2 to show three differences between DNA in the nucleus of a plant cell and DNA in a prokaryotic cell - AQA - A-Level Biology - Question 8 - 2020 - Paper 1

Question 8

Complete Table 2 to show three differences between DNA in the nucleus of a plant cell and DNA in a prokaryotic cell. Table 2 | DNA in the nucleus of a plant cell |... show full transcript

Worked Solution & Example Answer:Complete Table 2 to show three differences between DNA in the nucleus of a plant cell and DNA in a prokaryotic cell - AQA - A-Level Biology - Question 8 - 2020 - Paper 1

Step 1

DNA in the nucleus of a plant cell vs DNA in a prokaryotic cell - 1

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Answer

DNA in the nucleus of a plant cell is associated with histones and proteins, whereas prokaryotic DNA does not have histones.

Step 2

DNA in the nucleus of a plant cell vs DNA in a prokaryotic cell - 2

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The DNA in plant cells is linear, while the DNA in prokaryotic cells is circular.

Step 3

DNA in the nucleus of a plant cell vs DNA in a prokaryotic cell - 3

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Plant cells contain no plasmids, whereas prokaryotic cells can contain plasmids.

Step 4

Define 'non-coding base sequences' and describe where the non-coding multiple repeats are positioned in the genome.

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'Non-coding base sequences' refer to segments of DNA that do not code for proteins or polypeptides. These sequences are typically positioned between genes in the genome.

Step 5

Use the information in Table 3 to complete the phylogenetic tree shown in Figure 8.

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Top to bottom: C, T, L, R.

Complete Table 2 to show three differences between DNA in the nucleus of a plant cell and DNA in a prokaryotic cell - AQA - A-Level Biology - Question 8 - 2020 - Paper 1

Worked Solution & Example Answer:Complete Table 2 to show three differences between DNA in the nucleus of a plant cell and DNA in a prokaryotic cell - AQA - A-Level Biology - Question 8 - 2020 - Paper 1

DNA in the nucleus of a plant cell vs DNA in a prokaryotic cell - 1

DNA in the nucleus of a plant cell vs DNA in a prokaryotic cell - 2

DNA in the nucleus of a plant cell vs DNA in a prokaryotic cell - 3

Define 'non-coding base sequences' and describe where the non-coding multiple repeats are positioned in the genome.

Use the information in Table 3 to complete the phylogenetic tree shown in Figure 8.

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